Short answer is “yes you can”.
Go into content manager, find and select the WU NZ, then press the “unpackage” button I’ve got the red arrow on.
It will then show every subset of the WU, and you can select which installed packages you want to uninstall. Note: Mine shows “install” at the bottom right, because I’ve already previously uninstalled portions of the package and I’ve selected an uninstalled package.
I don’t know of any way to uninstall specific POI’s.
Just for future reference, when we get another WU, when you go into MP to “buy” it, you can chose “get” rather than “get and download”, and then you can go into content manager and select just the parts of the WU you want to actually install if you don’t like the whole package.
Regards